How popular is this St. Louis to Baltimore flight route?

Within the past month, 30 users have taken a look at flights from Lambert-St Louis to Baltimore/Washington.

How long is the flight from St. Louis to Baltimore?

There are many flights that can get you from St. Louis to Baltimore in 4h 12m. Fly via American Airlines or Delta to get the fastest option. The distance between St. Louis and Baltimore is about 736 mi. This flight may include one or multiple stops.

What are the cheapest airlines flying from St. Louis to Baltimore round-trip?

Frontier, at $124, was found to be the cheapest airline from St. Louis to Baltimore.Alternate airlines to your destination round-trip include American Airlines and Delta. Frontier is 62% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from St. Louis to Baltimore one-way?

For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $76. Users have also found prices from $93 and $99 on Spirit Airlines and Delta, respectively.

In terms of precipitation, rainfall in Baltimore ranges from 2.9 - 4.1 inches per month. July is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Baltimore when rainfall is around 2.9 in.

If weather is an important factor for your trip to Baltimore, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

What are the cheapest flights from St. Louis to Baltimore?

The cheapest flight price from St. Louis to Baltimore is $128. On average you can expect to pay $308. The most popular route, (Lambert-St Louis - Baltimore/Washington), can usually be booked for $165.

What are the most popular airlines that fly from St. Louis to Baltimore?

American Airlines, Delta and Frontier are the most popular airlines when flying from St. Louis to Baltimore.

What airports do I use to fly from St. Louis to Baltimore?

Baltimore/Washington is the airport most travelers will use when flying to Baltimore from Lambert-St Louis. Booking flights from Lambert-St Louis (STL) to Baltimore/Washington (BWI) should be relatively easy as there are 4 daily flights to Baltimore from 4 different airlines. 1h 55m is how long a flight from St. Louis to Baltimore/Washington will take if you book a nonstop flight.

Can I find deals for flights from St. Louis to Baltimore that include hotel bookings?

Yes. In addition to deals on St. Louis to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Baltimore?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Baltimore.

Can I find deals for business class flights from St. Louis to Baltimore?

Yes. Cheapflights offers flight deals from St. Louis to Baltimore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$72+ Flights from St. Louis to Baltimore

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Find cheap flights from St. Louis to Baltimore with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to Baltimore/Washington are usually found in March or September, booked 75 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from St. Louis to Baltimore

Round-trip from	$143 (Priceline)
One-way from	$72 (Cheapflightsfares)
Popular in	December
Cheapest in	March
Average price	$284

From Lambert-St Louis to Baltimore/Washington

Search Deals

One-way flight from Lambert-St Louis to Baltimore/Washington

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($41 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

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Find flight deals from St. Louis to Baltimore

Cheapest flights from St. Louis to Baltimore
Explore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Thu 9/2510:49 amSTL - BWI

1 stop6h 04mFrontier

Mon 9/296:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 9/15

$143

Thu 9/2510:49 amSTL - BWI

1 stop6h 04mFrontier

Sun 9/286:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 9/15

$144

Fri 10/246:42 pmSTL - BWI

1 stop13h 39mFrontier

Sun 10/269:42 pmBWI - STL

1 stop12h 50mFrontier

Deal found 9/15

$145

Fri 10/314:52 pmSTL - BWI

1 stop6h 26mFrontier

Thu 11/66:15 amBWI - STL

1 stop4h 57mFrontier

Deal found 9/16

$158

Sat 10/257:52 pmSTL - BWI

1 stop20h 52mFrontier

Sun 10/269:42 pmBWI - STL

1 stop12h 50mFrontier

Deal found 9/16

$160

Thu 10/1610:57 amSTL - BWI

1 stop9h 21mMultiple Airlines

Sat 10/2511:38 amBWI - STL

1 stop7h 24mMultiple Airlines

Deal found 9/16

$165

Thu 10/1610:57 amSTL - BWI

1 stop9h 21mMultiple Airlines

Sat 10/1811:33 amBWI - STL

1 stop7h 29mMultiple Airlines

Deal found 9/16

$170

Fri 9/261:57 pmSTL - BWI

1 stop24h 32mFrontier

Mon 9/296:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 9/15

$178

Fri 9/261:57 pmSTL - BWI

1 stop24h 32mFrontier

Sun 9/289:27 pmBWI - STL

1 stop16h 35mFrontier

Deal found 9/15

$179

Fri 10/314:52 pmSTL - BWI

1 stop6h 26mFrontier

Sun 11/25:00 amBWI - STL

1 stop5h 12mFrontier

Deal found 9/15

$183

Thu 10/24:00 pmSTL - BWI

1 stop7h 17mFrontier

Sun 10/59:52 pmBWI - STL

2 stops18h 12mFrontier

Deal found 9/15

$186

Best flights from St. Louis to Baltimore
Discover carefully curated flight deals from St. Louis to Baltimore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2025.

Wed 12/1710:13 amSTL - BWI

1 stop7h 16mAmerican Airlines

Sun 1/115:00 amBWI - STL

1 stop4h 14mAmerican Airlines

Deal found 9/14

$159

Wed 12/36:00 amSTL - BWI

1 stop4h 12mDelta

Sat 12/61:52 pmBWI - STL

1 stop5h 07mDelta

Deal found 9/15

$197

Thu 10/210:49 amSTL - BWI

2 stops12h 28mFrontier

Sun 10/59:52 pmBWI - STL

2 stops18h 12mFrontier

Deal found 9/15

$219

Tue 10/288:40 pmSTL - BWI

2 stops15h 00mMultiple Airlines

Sat 11/18:17 pmBWI - STL

1 stop15h 45mMultiple Airlines

Deal found 9/16

$262

Sat 11/15:22 pmSTL - BWI

1 stop4h 40mDelta

Sun 11/25:00 amBWI - STL

1 stop4h 37mDelta

Deal found 9/15

$197

Tue 3/106:00 amSTL - BWI

1 stop4h 07mDelta

Wed 3/116:00 amBWI - STL

1 stop4h 44mDelta

Deal found 9/14

$197

Tue 10/711:21 amSTL - BWI

1 stop4h 56mDelta

Tue 10/146:00 amBWI - STL

1 stop5h 26mDelta

Deal found 9/16

$257

Wed 10/297:05 amSTL - BWI

1 stop4h 31mDelta

Wed 11/54:44 pmBWI - STL

1 stop6h 20mDelta

Deal found 9/16

$257

Tue 11/1811:44 amSTL - BWI

1 stop4h 32mDelta

Tue 12/24:49 pmBWI - STL

1 stop6h 09mDelta

Deal found 9/17

$257

Tue 10/285:15 pmSTL - BWI

1 stop4h 00mDelta

Wed 11/57:05 amBWI - STL

1 stop6h 30mDelta

Deal found 9/16

$257

Wed 10/86:00 amSTL - BWI

1 stop4h 21mDelta

Tue 10/147:05 amBWI - STL

1 stop6h 30mDelta

Deal found 9/16

$257

Last-minute flights from St. Louis to Baltimore
Discover last-minute flight deals from St. Louis to Baltimore. Data last updated September 17, 2025 and is based on user searches.

Thu 9/2510:49 amSTL - BWI

1 stop6h 04mFrontier

Mon 9/296:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 9/15

$143

Thu 9/2510:49 amSTL - BWI

1 stop6h 04mFrontier

Sun 9/286:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 9/15

$144

Fri 9/261:57 pmSTL - BWI

1 stop24h 32mFrontier

Mon 9/296:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 9/15

$178

Fri 9/261:57 pmSTL - BWI

1 stop24h 32mFrontier

Sun 9/289:27 pmBWI - STL

1 stop16h 35mFrontier

Deal found 9/15

$179

Thu 10/24:00 pmSTL - BWI

1 stop7h 17mFrontier

Sun 10/59:52 pmBWI - STL

2 stops18h 12mFrontier

Deal found 9/15

$186

Thu 10/1610:57 amSTL - BWI

1 stop9h 21mMultiple Airlines

Sat 10/2511:38 amBWI - STL

1 stop7h 24mMultiple Airlines

Deal found 9/16

$165

Thu 10/1610:57 amSTL - BWI

1 stop11h 35mMultiple Airlines

Thu 10/236:05 amBWI - STL

1 stop5h 32mMultiple Airlines

Deal found 9/16

$170

Fri 10/246:42 pmSTL - BWI

1 stop13h 39mFrontier

Sun 10/269:42 pmBWI - STL

1 stop12h 50mFrontier

Deal found 9/15

$145

Sat 10/257:52 pmSTL - BWI

1 stop20h 52mFrontier

Sun 10/269:42 pmBWI - STL

1 stop12h 50mFrontier

Deal found 9/16

$160

Fri 10/314:52 pmSTL - BWI

1 stop6h 26mFrontier

Thu 11/66:15 amBWI - STL

1 stop4h 57mFrontier

Deal found 9/16

$158

Fri 10/314:52 pmSTL - BWI

1 stop6h 26mFrontier

Sun 11/25:00 amBWI - STL

1 stop5h 12mFrontier

Deal found 9/15

$183

One-way flights from St. Louis to Baltimore
Search for one-way flight options from St. Louis to Baltimore. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

Thu 10/210:49 amSTL - BWI

1 stop6h 04mFrontier

Deal found 9/15

$72

Fri 10/314:52 pmSTL - BWI

1 stop6h 26mFrontier

Deal found 9/16

$73

Sat 10/186:30 amSTL - BWI

1 stop6h 38mUnited Airlines

Deal found 9/14

$76

Mon 10/139:06 pmSTL - BWI

1 stop12h 14mFrontier

Deal found 9/15

$78

Thu 1/157:28 amSTL - BWI

1 stop7h 28mAmerican Airlines

Deal found 9/15

$79

Thu 10/167:23 amSTL - BWI

1 stop6h 33mAmerican Airlines

Deal found 9/15

$80

Mon 11/172:12 pmSTL - BWI

1 stop19h 08mFrontier

Deal found 9/16

$84

Sun 9/2810:39 amSTL - BWI

1 stop6h 21mFrontier

Deal found 9/15

$86

Sun 11/167:02 pmSTL - BWI

1 stop21h 07mFrontier

Deal found 9/15

$91

Thu 10/3010:57 amSTL - BWI

1 stop11h 35mSpirit Airlines

Deal found 9/15

$92

Sun 10/126:05 pmSTL - BWI

1 stop13h 29mFrontier

Deal found 9/15

$93

Sun 10/2610:17 amSTL - BWI

1 stop23h 01mFrontier

Deal found 9/15

$97

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Baltimore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 12/17

10:13 am-6:29 pm

1 stop7h 16m

Baltimore/Washington

Sun 1/11

5:00 am-8:14 am

1 stop4h 14m

$159

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 12/3

6:00 am-11:12 am

1 stop4h 12m

Baltimore/Washington

Sat 12/6

1:52 pm-5:59 pm

1 stop5h 07m

$197

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Sat 11/1

5:22 pm-11:02 pm

1 stop4h 40m

Baltimore/Washington

Sun 11/2

5:00 am-8:37 am

1 stop4h 37m

$197

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 3/10

6:00 am-11:07 am

1 stop4h 07m

Baltimore/Washington

Wed 3/11

6:00 am-9:44 am

1 stop4h 44m

$197

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 10/2

10:49 am-12:17 am

2 stops12h 28m

Baltimore/Washington

Sun 10/5

9:52 pm-3:04 pm

2 stops18h 12m

$219

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 10/7

11:21 am-5:17 pm

1 stop4h 56m

Baltimore/Washington

Tue 10/14

6:00 am-10:26 am

1 stop5h 26m

$257

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 10/29

7:05 am-12:36 pm

1 stop4h 31m

Baltimore/Washington

Wed 11/5

4:44 pm-10:04 pm

1 stop6h 20m

$257

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 11/18

11:44 am-5:16 pm

1 stop4h 32m

Baltimore/Washington

Tue 12/2

4:49 pm-9:58 pm

1 stop6h 09m

$257

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Tue 10/28

5:15 pm-10:15 pm

1 stop4h 00m

Baltimore/Washington

Wed 11/5

7:05 am-12:35 pm

1 stop6h 30m

$257

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Wed 10/8

6:00 am-11:21 am

1 stop4h 21m

Baltimore/Washington

Tue 10/14

7:05 am-12:35 pm

1 stop6h 30m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 21 results

The best insider tips for St. Louis to Baltimore flights

Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Baltimore trip

Airports

STL

Expect security screening at STL to take 5-10 minutes during off-peak times. Check real-time wait times online before heading to the airport.

BWI

Take the MTA Light Rail from BWI to downtown Baltimore for a quick and easy trip. Shuttles connect to the MARC and Amtrak station.

Our travel experts

Emily Zemler

Expert on BWI

Taryn White

Expert on STL

Best time to book a flight from St. Louis to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Baltimore

How far ahead should I book a flight from St. Louis to Baltimore?

Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Baltimore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis to Baltimore?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Baltimore (average of $241). Flying from St. Louis to Baltimore in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to BWI?

It’s typically best to fly out from St. Louis to Baltimore in the afternoon. Doing so could potentially save you 4% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from St. Louis to Baltimore?

Travelers seeking maximum savings on their St. Louis to Baltimore flight should consider departing on Thursday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Baltimore

Peruse reviews from past customers who have flown with Southwest, Delta, and American Airlines from St. Louis to Baltimore to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Southwest

8.0

Very good

4,242 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Delta

8.0

Very good

7,961 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Frontier

5.8

Fair

3,173 reviews

Southwest

8.0

Very good

4,242 reviews

Reviews

1 / 20

2.0

Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

What airports do I use to fly from St. Louis to Baltimore?
Baltimore/Washington is the airport most travelers will use when flying to Baltimore from Lambert-St Louis. Booking flights from Lambert-St Louis (STL) to Baltimore/Washington (BWI) should be relatively easy as there are 4 daily flights to Baltimore from 4 different airlines. 1h 55m is how long a flight from St. Louis to Baltimore/Washington will take if you book a nonstop flight.
How popular is this St. Louis to Baltimore flight route?
Within the past month, 30 users have taken a look at flights from Lambert-St Louis to Baltimore/Washington.
How long is the flight from St. Louis to Baltimore?
There are many flights that can get you from St. Louis to Baltimore in 4h 12m. Fly via American Airlines or Delta to get the fastest option. The distance between St. Louis and Baltimore is about 736 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from St. Louis to Baltimore round-trip?
Frontier, at $124, was found to be the cheapest airline from St. Louis to Baltimore.Alternate airlines to your destination round-trip include American Airlines and Delta. Frontier is 62% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from St. Louis to Baltimore one-way?
For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $76. Users have also found prices from $93 and $99 on Spirit Airlines and Delta, respectively.
What are the cheapest flights from St. Louis to Baltimore?
The cheapest flight price from St. Louis to Baltimore is $128. On average you can expect to pay $308. The most popular route, (Lambert-St Louis - Baltimore/Washington), can usually be booked for $165.
Can I find deals for flights from St. Louis to Baltimore that include hotel bookings?
Yes. In addition to deals on St. Louis to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Baltimore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Baltimore.
Can I find deals for business class flights from St. Louis to Baltimore?
Yes. Cheapflights offers flight deals from St. Louis to Baltimore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Baltimore?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Baltimore (average of $241). Flying from St. Louis to Baltimore in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for St. Louis to Baltimore

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Inner Harbor car rentals

West Baltimore car rentals

Fells Point car rentals

Mount Vernon car rentals

North Baltimore car rentals

East Baltimore car rentals

Top 4 airlines flying from St. Louis to Baltimore

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$124	Average$218	FlexibilityNo cancel fee	On-time62%
American Airlines	Cheapest$196	Average$376	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$196	Average$277	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$200	Average$370	FlexibilityNo cancel fee	On-time63%

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$72+ Cheap flights from St. Louis to Baltimore (STL - BWI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Baltimore with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Baltimore/Washington are usually found in March or September, booked 75 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from St. Louis to Baltimore

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Baltimore

Cheapest flights from St. Louis to BaltimoreExplore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Explore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Baltimore that are best for you.

The best insider tips for St. Louis to Baltimore flights

Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Baltimore trip

Airports

STL

BWI

Our travel experts

Best time to book a flight from St. Louis to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Baltimore

How far ahead should I book a flight from St. Louis to Baltimore?

What is the cheapest month to book a flight from St. Louis to Baltimore?

What is the cheapest time of day to fly from STL to BWI?

What is the cheapest day to fly from St. Louis to Baltimore?

Reviews of airlines servicing Baltimore

Peruse reviews from past customers who have flown with Southwest, Delta, and American Airlines from St. Louis to Baltimore to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Baltimore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from St. Louis to Baltimore?

How popular is this St. Louis to Baltimore flight route?

How long is the flight from St. Louis to Baltimore?

What are the cheapest airlines flying from St. Louis to Baltimore round-trip?

What are the cheapest airlines to fly from St. Louis to Baltimore one-way?

What are the cheapest flights from St. Louis to Baltimore?

Can I find deals for flights from St. Louis to Baltimore that include hotel bookings?

How can I find direct flights from St. Louis to Baltimore?

Can I find deals for business class flights from St. Louis to Baltimore?

What is the cheapest month to book a flight from St. Louis to Baltimore?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from St. Louis to Baltimore

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Cheapest flights from St. Louis to Baltimore
Explore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.